newLine() and CR/LF comparison

Question

Is the BufferedWriter.newLine() method in Java equals CR/LF ? What's actually inside of that method?

Answer 1

No.

BufferedWriter.newLine() writes a line separator. This is not necessarily "\\r\\n" . Quoting the Javadoc :

The line separator string is defined by the system property line.separator , and is not necessarily a single newline ( '\\n' ) character.

The system property line.separator contains the line separator of the current OS by default.

Answer 2

Inside of that method is:

 write(lineSeparator);

Where lineSeparator is an attribute of the BufferedWriter class that holds the System.getProperty("line.separator"); value in the moment the buffer was opened.